CVE-2026-28791
Prior to 2.1.7, a path traversal vulnerability exists in the TinaCMS development server's media upload handler.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Tina is a headless content management system. Prior to 2.1.7, a path traversal vulnerability exists in the TinaCMS development server's media upload handler. The code at media.ts joins user-controlled path segments using path.join() without validating that the resulting path stays within the intended media directory. This allows writing files to arbitrary locations on the filesystem. This vulnerability is fixed in 2.1.7.
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.33% probability · 25th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- ssw/tinacms\/cli
- Source
- security-advisories@github.com
References
- https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279cExploit, Vendor Advisory
- https://github.com/tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279cExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.